import java.util.Scanner;

/**
 * Created with Intellij IDEA.
 * Description:
 * User: 86135
 * Date: 2023-11-07
 * Time: 0:43
 */
public class Main {
    public static void main(String[] args) {
        Scanner scanner=new Scanner(System.in);
        double a=scanner.nextDouble();
        System.out.println(
                
        );
    }
}
